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Cisco Bug: CSCun37796 - Nexus 3000 vPC: LACP timed out or failed on Hot-Standby Link

Last Modified

Mar 13, 2018

Products (6)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3064 Switch
  • Cisco Nexus 3016 Switch
  • Cisco Nexus 3064-T Switch
  • Cisco Nexus 3048 Switch
  • Cisco Nexus 3132Q Switch

Known Affected Releases

6.0(2)U2(1)

Description (partial)

Symptom:
When connecting a hot-standby LACP connection through a vPC the following log messages are seen:
 
2014 Jan 28 16:55:13 USORDFDRL4SW1  ETHPORT-5-IF_ADMIN_UP  Interface Ethernet1/49 is admin up .
2014 Jan 28 16:55:14 USORDFDRL4SW1  ETHPORT-5-SPEED  Interface Ethernet1/49, operational speed changed to 1 Gbps
2014 Jan 28 16:55:14 USORDFDRL4SW1  ETHPORT-5-IF_DUPLEX  Interface Ethernet1/49, operational duplex mode changed to Full
2014 Jan 28 16:55:14 USORDFDRL4SW1  ETHPORT-5-IF_RX_FLOW_CONTROL  Interface Ethernet1/49, operational Receive Flow Control state changed to off
2014 Jan 28 16:55:14 USORDFDRL4SW1  ETHPORT-5-IF_TX_FLOW_CONTROL  Interface Ethernet1/49, operational Transmit Flow Control state changed to off
2014 Jan 28 16:55:17 USORDFDRL4SW1  VSHD-5-VSHD_SYSLOG_CONFIG_I  Configured from vty by admin on 10.255.255.161@pts/0
2014 Jan 28 16:57:14 USORDFDRL4SW1  ETH_PORT_CHANNEL-3-RSP_TIMEOUT  Component MTS_SAP_LACP timed out on response to opcode:MTS_OPC_PCM_PROTOCOL_UP (for:Ethernet1/49)
2014 Jan 28 16:57:14 USORDFDRL4SW1  ETH_PORT_CHANNEL-3-LACP_ERROR  LACP Misconfiguration on Ethernet1/49
2014 Jan 28 16:57:14 USORDFDRL4SW1  ETHPORT-5-IF_SEQ_ERROR  Error ("LACP timed out or failed") communicating with MTS_SAP_ETH_PORT_CHANNEL_MGR for opcode MTS_OPC_ETHPM_PORT_BRINGUP (RID_PORT: Ethernet1/49) - Ethpm didn't receive a Link UP from the driver on time or had an internal error, check Port Client  and Ethpm
2014 Jan 28 16:57:15 USORDFDRL4SW1  ETHPORT-5-IF_DOWN_ERROR_DISABLED  Interface Ethernet1/49 is down (Error disabled. Reason:LACP timed out or failed)

Conditions:
A device running LACP in hot-standby mode connecting via vPC.
This issue has only been observed on the Nexus 3000 platform
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Bug Details Include

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